This is kind of a stupid post, but what the heck! I'm bored and jobless...

In Five Nights at Freddy's, there are "only" 7 nights.

...Right?

Well, you have Night 1 -> 5 being your "story" nights, Night 6 as a challenge night and Custom Night which most people typically only play to attempt 4/20 (all animatronics at their max AI Level of 20, also referred to as a "Max Mode")

However, even if you play these 7 nights you have technically only played 0.003599% of the game.

Obviously not everyone has beaten 4/20 though, so here's the other percentages if you're curious to see how much you've played:

• If you beat Night 1 only you've played 0.000514%,

• If you also beat Night 2 you've played 0.001028%,

• If you beat Night 3 after that you've played 0.001542%,

• If you beat Night 4 next you've played 0.002057%,

• If you beat Night 5 for the first star you've played 0.00257%

• If you beat Night 6 for the second star you've played 0.003084%

• And like we said, Custom Night 4/20 for the third star is 0.003599%.

You can probably see where I'm going with this:

In the Custom Night each animatronic goes from AI Level 0 to 20 leading to 21 possible options for the 4 animatronics. To get the total possible combinations of most stuff, you have to multiply it together, so let's do that!

21 X 21 X 21 X 21 = 194,480

...And if you bothered checking my math at all instead of trusting a random post on Gamejolt, you should see that the ACTUAL number of possible Custom Nights is 194,481

...Right?

Well it would be, but the Golden Freddy easter egg you get by entering 1, 9, 8, 7 actually crashes the game and doesn't let you play that night without changing the code, though I'm staying completely vanilla for this so we have to take that one off.

194,480 isn't our final number, though...

In FNaF 1, every night has a unique power drain that increases depending on the night number.

So while you can't edit it from the Custom Night, this does actually make Nights 1-6 technically their own unique nights, even if you put the exact AI levels into the Custom night.

Cool, so we're locked at 194,486 possible nights now.

There is NO way we can go ANY further with the number...

...Right?

Well, technically we CAN!

Also if you somehow don't know, FNaF additionally has a few official console ports being ported to PlayStation, Xbox and Nintendo Switch.

Now I could multiply our current number of possible nights being 194,486 by 4 - one for each port - but considering the game plays the exact same on each besides controls, that would be pretty dumb...

However, something all these ports have in common is their cheats.

There are three cheats: Faster Nights, Radar Map and Infinite Power.

These can all be toggled separately leading to 8 total combinations of them, so adding these into the equation here's all the possible nights (for real this time)

194,486 possible nights X 8 possible cheat combinations = 1,555,888

So we are now well over a million. There is literally NO way we can take this further - FNaF has 1,555,888 possible nights.

...Right?

Ok ok, I know you're probably getting sick of seeing that word, but there is ONE more factor we can put into play here...

(Really. There's nothing else I can find to increase the count after this)

While it's outdated, the old mobile port of FNaF was a bit different from the main game. It had nights that are half the length of the other versions being the same length as the "Faster Nights" cheat.

Now you may be asking how this changes anything when we've already factored in that cheat on it's own in our calculations above?

Well, unlike our "Faster Nights" cheat the old mobile port also has speed up movement timers for specifically Bonnie and Chica along with the power draining faster.

(I can't find the exact number changes, but here's my source)

This technically makes all 194,486 possible nights here unique from every other version, so let's add it on!

1,555,888 nights with cheats + 194,486 old mobile port nights

= 1,750,374 Possible Nights!

Yup, that's right (going off my calculations, anyways).

The first Five Nights at Freddy's game has almost 2 million nights as it stands with 1,750,374 possible nights!

I don't think there's any other way to push it further...

...Right?

...Ok sorry, I had to.

But no, there actually isn't as far as I can tell.

You could add on the Five Nights from Help Wanted both Flat and VR along with the shooting minigame from Help Wanted 2 (you play a simplified version of it by shooting darts) if you wanted to get an extra 12 Nights, but those are mechanically different games so I'm not going to count them.

You could also add all the possible nights from each console version as separate ones along with the newer mobile port and ports of Help Wanted + Help Wanted 2 justifying it with the different controls as enough of a reason to, though I don't agree with this since the base game is still the same.

As far as I can tell, this truly is as far as we can push the bar.

Let me know in the comments if you see any errors in my calculations or if you have any suggestions on how to increase the count (Vanilla only, no editing files or anything) but this is it for now!

One last thing though...

Each night in Five Nights at Freddy's is 8 minutes and 55 seconds and each Fast Night is 4 minutes 30 seconds.

Here's how long it would take to beat every night:

(194,486 nights X 535 seconds [8 mins 55 secs]) X 4

= 416,199,040 seconds which is 4,817 days, 2 hours, 50 minutes and 40 seconds (or over 13 years and 2 months straight)

(194,486 nights X 270 seconds [4 mins 30 secs]) X 4

= 210,043,880 seconds which is 2,431 days, 1 hour, 31 minutes and 20 seconds (or over 6 years and 8 months straight)

416,199,040 seconds + 210,043,880 seconds

= 626,242,920 seconds which is a grand total of 7,248 days, 4 hours, and 22 minutes (or just over 19 years and 10 months straight)

...Yeah. NO ONE is EVER truly going to play 100% of FNaF...

It would take about 24.9931% of someone's life even if it was even possible to play non-stop (if we say the average human life is 29,000 days)

And that's not even getting into the games with more customisation such as FNaF 2 or UCN.

Still though, I hope you enjoyed this pointless deep dive. I spent WAY too much time on it...